Quartz (Gray/Smoky Variety)
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary (Primary) With Artificial Modification
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
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Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt (Vesicular or Porphyritic)
Basalt (composed primarily of plagioclase feldspar, pyroxene, and olivine)
igneous
Granite
Granite (Alkali-feldspar granite)
igneous
Granite Cobble
Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Quartz (specifically Milky/Yellow Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (specifically Milky or Rose Quartz variant)
Silicon Dioxide (SiO2)
mineral
Basalt
Extrusive mafic igneous rock
igneous
Blue Lace Agate (Variety of Chalcedony)
Silicon Dioxide (SiO2)
mineral
Crushed Stone (Likely Granite or Diabase)
Intrusive Igneous Rock (Granitoid/Gabbroid)
igneous
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Granodiorite
Granodiorite
igneous
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within a metamorphic matrix
metamorphic
Goethite
Goethite (FeO(OH))
mineral
Calcite
Calcite (Mineral, Calcium Carbonate - CaCO3)
Mineral
Green Aventurine
Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Jadeite and Nephrite (Jade)
Sodium Aluminum Silicate (Jadeite) / Calcium Magnesium Iron Silicate (Nephrite)
metamorphic
Lapis Lazuli
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Granite
Plutonic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Diamond (in a Gold Jewelry Setting)
Carbon (C)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Diamond (in a jewelry setting)
Carbon (C)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Agate
Chalcedony (Cryptocrystalline variety of Quartz, SiO2)
mineral
Peacock Ore (Bornite or Chalcopyrite treated with acid)
Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Lapis Lazuli
Lapis lazuli (complex rock composed of Lazurite, Calcite, and Pyrite)
metamorphic
Azurite with Malachite
Azurite: Cu3(CO3)2(OH)2 / Malachite: Cu2CO3(OH)2
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
mineral
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
mineral
Peacock Ore
Bornite (Cu5FeS4)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Azurite-Malachite with Limonite
Cu3(CO3)2(OH)2 (Azurite) / Cu2CO3(OH)2 (Malachite)
mineral